Hey there !
I am interested in buying a flexDF or maybe a viokey in the near future. If I got it right, with the implant I get my “personal” UID which no one else has on this planet, so its like my real ID(-Card). Now, if I for example I install a lock in my house, which I can open through my UID, i am in controll over that and I can just programm it to accept my UID. My question now is, how to get for example a security guard to change my normal workplace entrance-card-id to my implant’s UID so I can use it to open my doors at office. My concrete plan is to let the accountant in my gym (McFit) rewrite my profile and change my random membercard ID to my UID so I can get access to my gym through my implant. How to get the person to do that? And if she declines what should I do, because I cant just copy my membercard to my flexDF right?

First, remember that no implant will handle every type of system. i.e. your gym may use an access control that is not compatible with the flexDF, but may be compatible with the xEM. But your work cards may use a different tech than your gym,. Or it may not be compatible with any implant.

If you have an access card for your gym or work, try scanning it with an NFC app like NFC tools. Also buy the DT diagnostic card. I always have it on me. You can hold this up to the readers and it will tell you what frequency they use, which will narrow down what implants might be compatible. The flexDF and the Vivokey are both high frequency. Many access control systems use low frequency.

So because se flexDF is “compatible with all ISO14443A RFID systems” it should be possible to let the trainers change my membercard ID to the UID of the flexDF right?
Then I would still have 7 kByte of storage left. Is it then possible to programm the flexDF so, that it creates a profile including my name, telephone number and email-adress if a smartphone canns it using NFC?